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LOS ANGELES - After checking their security cameras when they noticed trash strewn about in front of their home, a Los Angeles couple was shocked to discover they had been watched.

Tracy and David Serrano looked at their footage Sunday afternoon and discovered a man pacing back and forth in front of their home the previous night.

The stranger seemed to watch the couple get out of their taxi after returning from a charity event and, after the couple went inside, tried opening their door.

The man, dressed unassumingly in khaki slacks and a polo, is then seen going around the back of the Serranos' house, peering in all their windows and glass doors.

“We were just so creeped out because the fact he was so close to our bedroom," Tracy told KTLA, "and that he had to audacity to come in and not only stay in our backyard for 10 or 15 minutes, but he left and then came back."

The couple said the do not know the man and are unaware of what his motive would be.